I'm taking the motor to be dynoed Monday. I added 5 quarts of oil and filter and primed the motor. The dipstick says I can add another quart of oil. I bought a GM dipstick(yellow tip), tube and oil pan when you could still buy them from GM. I'm leaning towards cutting the tube to get the correct reading. I'm thinking adding the extra oil could be detrimental to the motor. The pan is correct, the motors been in the car, has yellow tip dipstick, only leaves the tube. Was the 5 quarts with the filter a hard and fast number? Thanks Paul